Ion association in calcium phosphate solutions at 37°C |
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Authors: | Jingwu Zhang A Ebrahimpour G H Nancollas |
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Institution: | (1) Department of Chemistry and Biomaterials, State University of New York, 14214 Buffalo, NY |
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Abstract: | Ion association in the system Ca(OH)2–H3PO4–KCl–H2O at 37°C has been studied potentiometrically over a range of pH from 3 to 9. The experimental conditions were optimized for the accurate determination of the association constants for the formation of the ion pairs CaH2PO
4
+
, CaHPO4 and CaPO
4
–
which were found to be 27.9±0.1, 591±2, and (1.35±0.02)×106 L-mol–1, respectively. |
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Keywords: | Ion association calcium phosphate potentiometric measurement |
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